JP3003581U - Static mixing module and mixing device - Google Patents

Abstract

(57) [Summary] [Structure] An intermediate strip and a wing portion having a constant width extending so as to be orthogonal to both sides of a bending line that defines both sides thereof, and a defect portion, and one side of the intermediate strip. In the above, the wing portions and the defective portions are alternately arranged, and on the opposite side of the intermediate strip, the wing portions and the defective portions are arranged opposite to the one side, and the wing portions are Two of the static mixing part materials are bent in the same direction with respect to the intermediate strip at a predetermined angle, and the outer peripheral arrow view from the side of the strip has a substantially perfect circle. And a mixing device using at least one of the static mixing module, in which the surfaces of the strips on the opposite side to each other are fixed so that the wing portion and the defective portion are aligned so as to face each other. [Effect] Not only a high stirring effect can be achieved in spite of a low pressure loss in a short distance, molding processing and assembly are easy, and manufacturing can be performed at low cost.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a static mixing module for statically contacting and mixing two or more kinds of fluids (gas, liquid, powder, etc.) in a pipe flow path, and an improvement of a mixing device having the static mixing module loaded in the pipe.

[0002]

[Background of device]

 The static mixing module is arranged in a stationary state in one or more pipes in a pipe having a predetermined length and inner diameter, and promotes contact and mixing of fluids (gas, liquid, powder, etc.) flowing into the pipe. It has a function to allow it, and also has a function of mixing minute bubbles into the liquid in gas-liquid mixing.

FIG. 2 of Japanese Patent Publication No. 54-21987 discloses a module that can form a mixed matrix that induces a complicated velocity vector in the axial direction of a pipe at low cost. Also shown in FIG. 3 is a module that is a mirror image of FIG. FIG. 7 of Japanese Patent Publication No. 55-37941 discloses a similar static mixing module.

These modules basically have the form shown in FIG. These modules have a configuration in which one elliptical disk is punched out to form a wing portion, and the wing portion is bent twice in alternating vertical directions and bent in four directions.

However, there are drawbacks that two types of molds are required to perform the double bending process, the cost becomes higher, and the manufacturing cost becomes higher due to the increase in the number of times of the bending process.

A module shown in FIG. 18 is known as a module that can achieve a high stirring effect despite a low pressure loss (pressure loss) in a short distance. As shown in the left diagram of FIGS. 19 to 21, this is formed by pressing a piece (wing portion) of a predetermined shape, and assembling this piece by welding to form a block as shown in the right figure. It was formed by welding to the structure shown in (1) (see Japanese Patent Publication No. 61-32117).

According to this manufacturing means, the piece can be formed only by punching and pressing, the press die can be simplified, and the accuracy as a single component can be easily ensured. It requires an extremely large number of parts in order to accommodate the piping dimensions that store the parts, and it is difficult to select and complement the parts.This not only causes quality control problems such as mixing of different products, but also the production cost and production efficiency. There was a big problem in terms. In addition, since many welding points are complicated, special welding machines are required, which also increases production costs.

Therefore, an object of the present invention is not only to achieve a high agitation effect despite a low pressure loss over a short distance, but also to facilitate molding and assembling, and to manufacture at a low cost. It is to provide a mixing module and a mixing device.

[0009]

[Means for Solving the Problems]

 A first static mixing module which achieves the above object has an intermediate strip, a wing portion having a constant width extending so as to be orthogonal to both sides of a bending line defining both sides thereof, and a defect portion, and the intermediate strip is provided. The wing portions and the defective portions are alternately arranged on one side, and the wing portions and the defective portions are arranged opposite to the one side on the opposite side of the intermediate strip. The wings are bent in the same direction with respect to the intermediate strip at a predetermined angle, and two of the static mixing part materials whose outer-peripheral arrow seen from the side of the strip has a substantially perfect circle are It is characterized in that the surface of the strip on the side opposite to the bending direction of each wing portion is fixed so that the wing portion and the defective portion are aligned so as to face each other.

In addition, a mixing device that achieves the above object is such that at least one of the first static mixing modules is arranged in a pipe through which a plurality of fluids can pass, so that the intermediate strip is parallel to the radial direction of the pipe cross section. It is characterized in that it is fixed through a fixing member.

Further, in the mixing device for achieving the above object, at least one of the static mixing modules is arranged such that the intermediate strip is parallel to the radial direction of the pipe cross section, and the blades on both sides of the module and the The first static mixing part material disposed on both sides of the wing portion is arranged in parallel so that the wing portions of the first static mixing part material are opposed to each other and the module and the intermediate strip of the static mixing part material are oriented in the same direction. At least two static mixing modules are formed by fitting the blades of each other to the opposing defects of the other side, and the adjacent static mixing modules are arranged so that the intermediate band is parallel to the radial direction of the pipe cross section. The static mixing module is rotated at 45 to 90 degrees without changing the condition that at least one end of the static mixing module is fixed. It is characterized in that it is fixed to the pipe through a fixed member.

In the mixing device for achieving the above object, at least one of the first static mixing modules is arranged so that the intermediate strip is parallel to the radial direction of the pipe cross section, and both sides of the module are A wing portion and a V-shaped static mixing part material arranged on both sides of the wing portion with the bending directions of the wing portions facing each other, and the wing portions of the static mixing parts are fitted to the opposing defect portions of the opposing wing portions. At least two or more static mixing modules are formed, and at least one end of the static mixing module is fixed to the pipe via a fixing member.

(Structure of V-shaped static mixing part material) An intermediate strip and a wing portion having a constant width extending so as to extend orthogonally to both sides thereof and a defect portion, and the wing is provided on one side of the intermediate strip. The portions and the defective portions are alternately arranged, and the wing portion and the defective portion are arranged on the opposite side of the intermediate strip body so as to be inverted from the one side. A dogleg-shaped static mixing part material that is bent at the center line of the belt and has a substantially perfect circle when viewed from the outer peripheral surface side.

Furthermore, the mixing device which achieves the above object is such that at least one of the first static mixing modules is arranged in a pipe through which a plurality of fluids can pass so that the intermediate strip is perpendicular to the radial direction of the pipe cross section. It is characterized by being fixed via a fixing member.

Furthermore, in the mixing device for achieving the above object, at least one of the first static mixing modules is arranged so that the intermediate strip is perpendicular to the radial direction of the tube cross section, and both sides of the module are arranged. Of the V-shaped static mixing part material disposed on both sides of the blade and the bending directions of the blades are opposed to each other, and the blades are fitted to the opposing defected portions. At least two or more static mixing modules are formed, and at least one end of the static mixing module is fixed to the pipe via a fixing member.

Further, in the mixing device for achieving the above object, at least one of the first static mixing modules is arranged so that the intermediate strip is perpendicular to the radial direction of the tube cross section, and both sides of the module are arranged. The wings and the wings of the dogleg-shaped static mixing parts material arranged on both sides of the wings are made to face each other in a bending direction, and the wings are fitted to the opposing defects of the opposite side. At least two static mixing modules are formed, and adjacent static mixing modules are rotated 45 to 90 degrees with respect to each other without changing the condition that the intermediate strip is perpendicular to the radial direction of the pipe cross section. At least one end of the mixing module is fixed to the pipe via a fixing member.

Furthermore, the mixing device for achieving the above object is characterized in that it is constituted by a combination of only two or more of the first static mixing modules.

[0018]

【Example】

 Hereinafter, a static mixing module according to the present invention and a mixing device in which the static mixing module is installed in a pipe will be described in detail according to an embodiment shown in the accompanying drawings.

Embodiment 1 FIG. 1 is a perspective view showing an example of a static mixing module according to the present invention, and FIG. 2 is a plan view thereof.

The method of manufacturing the static mixing module (hereinafter abbreviated as “module”) 1 is not particularly limited, but for example, a plate material is cut by wire cutting or punched by press working, and then bent, and then static mixing parts are formed. A material (hereinafter abbreviated as “part material”) 2 is created.

The bending angle α at the time of this bending is preferably 5 ° to 85 °, more preferably 10 ° to 75 °.

Next, the parts material 2 is welded by aligning the surfaces of the intermediate strip 3 on the opposite side of the bending direction of each of the two blades 4 so that the blades 4 and the defective portions 5 face each other. The module 1 is manufactured by fixing it using a means such as an adhesive.

As a method of producing the module of the present embodiment, in addition to the wire cutting and the press working as described above, embossing molding, injection molding and the like can be considered, but the method is not limited to this.

Various steel materials, resins, and the like can be considered as the material of the module of this embodiment, but the material is not limited to these.

It is considered that the module of the present embodiment is installed and used in a pipe. At that time, depending on the viscosity of the liquid to be mixed, the intermediate strip 3 is parallel or perpendicular to the radial direction of the pipe cross section. You can use either (right angle).

Further, various types of modules can be created by changing the length and the number of blades 4 of the part material 2.

The size of the part material 2 can be changed according to the pipe diameter. The tube diameter may be very wide, from 10 mm to 3000 mm, and therefore the module of this embodiment can be applied to a reaction device (reactor) or the like as well as the mixing device.

According to the module of this embodiment, it is possible to reduce the manufacturing process and the production cost. Further, since the two parts materials are bonded together, it is possible to obtain greater strength than a conventional module formed by bending a single plate.

Embodiment 2 FIG. 3 is a perspective view showing an embodiment of the mixing apparatus according to the present invention. FIG. 4 is a side sectional view showing an embodiment of the mixing device.

In FIGS. 3 and 4, reference numeral 10 denotes a mixing device loaded with the module 1. Reference numeral 11 denotes a tube for loading a plurality of modules 1. The tube 11 preferably has a diameter slightly longer than the long side of the intermediate strip 3 of the module 1, and the material is not particularly limited. The fluid flowing in the tube may be any of gas, liquid, powder, etc., and the type of fluid may be two or more. That is, any combination of liquid and gas, liquid and liquid, liquid and powder, powder and powder, and the like may be used. Further, it may be a fluid having high viscosity, or a fluid having high viscosity and a fluid having low viscosity.

In FIG. 4, reference numeral 12 denotes a fixing member for fixing the module 1 to the pipe 11. The fixing member 12 is not particularly limited, but for example, the fixing ring has an inner diameter which is almost the same as the inner diameter of the pipe 11. Is particularly preferred.

As shown in the figure, the tip of the wing portion 4 of the module 1 is fixed to the fixing member 12 by welding or the like, and the fixing member 12 is sandwiched by the fixing means 13 composed of two flanges, and the entire module is It is fixed to the pipe 11. The fixing means 13 may be a means other than the flange fixing.

When installing the plurality of modules 1 in the pipe 11, it is desirable that the modules 1 are fixed to each other at some points by a method such as welding.

After the plurality of modules 1 each fixed to each other are installed in the pipe, the fixing member 12 is fixed to the pipe 11 by the fixing means 13. Such fixing prevents the idle rotation of the module due to the fluid pressure and does not impair the mixing effect.

In the mixing device shown in FIGS. 3 and 4, when a plurality of fluids to be mixed are supplied into the pipe 11 from the fixing means 13 side, the fluids are caused by the existence of the intermediate strip 3, the blade portion 4 and the defective portion 5. A mixing matrix is formed that induces a complex velocity vector in the axial direction of the tube, and the mixture is stirred.

The size, the number, the length, etc. of the module 1 can be variously changed, and thus, the mixing device having various stirring capabilities can be produced. Stirring Effect of Wing 4 and Intermediate Strip 3 According to this embodiment, the presence of the intermediate strip 3, the blade 4 and the defect 5 forms a mixed matrix that induces a complicated velocity vector in the axial direction of the pipe. In particular, a great effect can be obtained for stirring a fluid having a not particularly large viscosity, and since the module 1 and the pipe 11 are not in contact with each other, there is no pressure loss of the fluid by the contact surface.

Further, as the module, all members having the same shape can be used, so that the production cost can be kept low.

Embodiment 3 FIG. 5 is a side sectional view showing another embodiment of the mixing apparatus of the present invention.

As shown in the figure, the module 1 shown in FIG. 1 is arranged such that the intermediate strip 3 is parallel to the radial direction of the cross section of the tube 11. Both sides of the module 1, that is, the left and right wings 4 and 4 in the drawing, and the wings of the part materials 2 and 2 arranged on both sides of the wings 4 and 4 are made to face each other, and 1 and the intermediate strip 3 of the part material 2 are aligned in parallel with each other. Then, a new module 20 is formed by fitting the wing portions of each other to the opposing defective portions. That is, the module 20 is formed by a combination of one module 1 and two parts materials 2 and 2.

A plurality of modules 20 are formed, and the modules 20 are loaded into the tube 11 to obtain the mixing device 10. In this embodiment, the two adjacent modules in this loading, namely the first module 20 and the second module 20, rotate 90 degrees with respect to each other without changing the condition that the intermediate strip 3 is parallel to the radial direction of the tube 11 cross section. And is fixed. This rotation angle can be arbitrarily set within the range of 45 to 90 °.

Further, the third module 20 adjacent to the second module 20 is also rotated by 90 ° with respect to the second module 20. This 90 [deg.] Rotation arrangement is performed sequentially, and a plurality of modules are welded to each other and loaded into the tube 11 to form a mixing device.

The means for fixing the module 20 to the pipe 11 is not particularly limited, but the first module 20 of the modules 20 is fixed to the pipe 11 via the fixing ring 12. In this embodiment, a part material 21 for fixing is used between the fixing member 12 and the module 1.

In the above-described embodiment, when forming the module 20, two or more modules 1 are installed side by side, and two parts materials 2 similar to those shown in FIG. It is also possible to combine the two.

Compared with the mixing device of the second embodiment, in this embodiment, a large amount of turbulence due to the flow velocity occurs at the same length, and due to the presence of the intermediate strip 3, the blade portion 4, and the defect portion 5, the tube is axially moved. Since the mixing matrix that induces a complicated velocity vector is also complicated, a great effect can be obtained for stirring a fluid having a lower viscosity.

Further, since the parts materials having the same shape can be used for all the modules, the production cost can be kept low.

Embodiment 4 FIG. 6 is a side sectional view showing another embodiment of the mixing apparatus of the present invention.

As shown in the figure, the module 1 is arranged such that the intermediate strip is parallel to the radial direction of the tube cross section, as in the third embodiment. However, the form of the intermediate strip of the part materials 2 and 2 arranged on both sides of the module 1, that is, on the left and right in the drawing is different from that of the third embodiment.

The parts materials 2 and 2 have a dogleg shape as shown in the drawing. As shown in FIG. 7, this V-shaped part material is punched or wire-cut from a plate material and bent at a bending angle at a minor axis center line 204 of an intermediate strip 203 of an elliptical plate material having a wing portion 201 and a defective portion 202. It is created by bending into α. At that time, the bending angle α is the same as the bending angle α of the module 1 used in the present embodiment, preferably 5 ° to 85 °, more preferably 10 ° to 75 °.

Further, the length and the number of blades 201 can be appropriately changed.

As another aspect of the dogleg-shaped part material, there are those shown in FIGS. 8 and 9. That is, the wing portion 201 and the defect portion 202 reaching the central axis in the minor axis direction are formed by wire cutting from the elliptical plate material shown in FIG. Therefore, the width of the intermediate strip is almost non-existent and can only be assumed to be linear.

Next, it is bent at the bending angle α similar to the above on the central axis in the minor axis direction, and the dogleg-shaped part material shown in FIG. 9 is formed. When viewed from the side of the band surface, which is assumed to be a linear shape after this bending, the outer peripheral arrow view is a substantially perfect circle. This is because it is arranged in a circular pipe.

The number and length of the blades of the dogleg-shaped part material can be changed similarly to those of the part material having the intermediate strip.

The module 20 in this embodiment is formed by a combination of one module 1 and two dogleg parts 2 and 2.

A plurality of modules 20 are formed and are loaded into the tube 11 to obtain the mixing device 10. Since the fixing means of the module is the same as that of the embodiment shown in FIG. 5, its explanation is omitted.

Compared with the mixing apparatus of Example 23, this example has less pressure loss and has a great effect on stirring fluid having a viscosity intermediate between the viscosities preferred in Examples 2 and 3. To be

Embodiment 4 FIG. 10 is a side sectional view showing another embodiment of the mixing apparatus of the present invention.

The present embodiment is an example in which the module 1 shown in FIG. 2 is arranged in the pipe 11 so that the intermediate strip 3 is perpendicular to the semi-radial direction of the cross section of the pipe. The fixing means may be the same as the method described in the above embodiment.

The bending angle α of the module 1 to be used is preferably 5 ° to 85 °, more preferably 10 ° to 75 °.

The mixing apparatus 10 of this aspect is an example in which a high stirring effect can be realized with a lower pressure loss than the mixing apparatus of the aspect shown in FIG.

FIG. 11 shows an example in which the bending angle α of the module 1 is made larger than the bending angle α of the module used in the embodiment shown in FIG. It is suitable for mixing a fluid having a slightly higher viscosity than the mixing device of the embodiment shown in FIG.

FIG. 12 shows an example in which the dogleg shaped parts materials described in FIGS. 6 to 9 are combined in the embodiment shown in FIG. This mixing device 10 corresponds to FIG. 6, but can realize a lower pressure loss than the mixing device shown in FIG.

FIG. 13 shows an example in which the plurality of modules 20, 20 are rotated by 90 ° similarly to FIG. As a result, a lower pressure loss can be realized than in the mixing device shown in FIG.

Embodiment 5 This embodiment is composed of various combinations of only the module 1, and examples thereof are shown in FIGS. 14 and 15.

Sixth Embodiment This embodiment is an example in which a convex portion 30 is provided at an intermediate portion of the blade portion of each module 1, as shown in FIG. Providing the convex portion 30 is effective for positioning when combining and fitting parts materials. It goes without saying that the shape of such a convex portion is not limited to that shown in the drawing. Further, instead of the convex portion, a linear portion may be formed that connects the blade portions to each other.

[0065]

[Effect of device]

 According to the present invention, an improved static mixing module and mixing that not only achieves a high stirring effect despite a low pressure loss over a short distance, but is also easy to mold and process and can be manufactured at low cost. A device can be provided.

[Submission date] May 20, 1994

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

Further mixing apparatus to achieve the above object, the at least one of the first Sutate I click the mixing module consists of at least one dog-leg static Mixing program part material Te set Align,該Ku the shaped static Mixing ring part member has a blade portion及 beauty defect of constant width extending to perpendicular intermediate band member and on both sides, wings part and該欠loss portion on one side of the intermediate band member are each alternately is placed, also wings part and該欠loss portion on the opposite side of the intermediate band member are arranged to be inverted from said one side is bent in the minor direction of the center line of the intermediate strip body The outer peripheral arrow seen from the surface side of the strip has a substantially perfect circle, and at least one of the first static mixing modules is arranged so that the intermediate strip is parallel to the radial direction of the pipe cross section. , The module It is fitted into the defect of the counterpart facing the sides of the wings and the wings portion the dogleg static mixing is opposed bending directions of the wings of the part material and another of the wings which are arranged on both sides of the Le At least two static mixing modules are formed, and at least one end of the static mixing module is fixed to the pipe via a fixing member.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Delete

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a static mixing module.

FIG. 2 is a plan view of the above.

FIG. 3 is a perspective view showing an embodiment of a mixing device.

FIG. 4 is a side sectional view showing an embodiment of a mixing device.

FIG. 5 is a side sectional view showing another embodiment of the mixing device.

FIG. 6 is a plan view showing an example of manufacturing a dogleg-shaped part material.

FIG. 7 is a plan view showing another example of manufacturing the dogleg-shaped part material.

FIG. 8 is a plan view showing another example of manufacturing the dogleg-shaped part material.

FIG. 9 is a side sectional view showing another embodiment of the mixing device.

FIG. 10 is a side sectional view showing another embodiment of the mixing device.

FIG. 11 is a side sectional view showing another embodiment of the mixing device.

FIG. 12 is a side sectional view showing another embodiment of the mixing device.

FIG. 13 is a side sectional view showing another embodiment of the mixing device.

FIG. 14 is a side sectional view showing another embodiment of the mixing device.

FIG. 15 is a side sectional view showing another embodiment of the mixing device.

FIG. 16 is a perspective view showing another embodiment of the mixing device.

FIG. 17 is an explanatory diagram showing a conventional example.

FIG. 18 is an explanatory diagram showing a conventional example.

FIG. 19 is an explanatory diagram showing a conventional example.

FIG. 20 is an explanatory view showing a conventional example.

FIG. 21 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

 1: Static mixing module 2: Static mixing part material 3: Intermediate band 4: Wing part 10: Mixing device 11: Pipe 12: Fixing member 13: Fixing means 20: Static mixing module

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 20, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Scope of utility model registration request

[Correction method] Change

[Correction content]

[Scope of utility model registration request]

Claims (8)

[Scope of utility model registration request] 1. An intermediate strip and a wing portion having a constant width extending so as to be orthogonal to both sides of a bending line that defines both sides of the intermediate strip and a defect portion, and the wing portion on one side of the intermediate strip. And the defective portion are alternately arranged, and the wing portion and the defective portion are arranged on the opposite side of the intermediate strip from the one side, and the wing portion is arranged on the intermediate strip. On the other hand, two of the static mixing part materials which are bent in the same direction at a predetermined angle and whose outer peripheral arrow view seen from the side of the strip body form a substantially perfect circle A static mixing module, characterized in that the surfaces of the strip are fixed so that the wing portion and the defective portion face each other so as to face each other. 2. A pipe in which a plurality of fluids can pass is provided in the pipe.
At least one of the static mixing modules described above is fixed via a fixing member so that the intermediate strip is parallel to the radial direction of the tube cross section, and a mixing device. 3. The static mixing module according to claim 1, wherein at least one of the static mixing modules is arranged such that the intermediate strip is parallel to the radial direction of the tube cross section, and the wing portions on both sides of the module and both sides of the wing portion. 6. The static mixing part material according to claim 1, wherein the wings of the static mixing part material are opposed to each other, and the modules and the intermediate strips of the static mixing part material are aligned in parallel with each other. At least two static mixing modules are formed by fitting the blades to the opposing defect parts, and the adjacent static mixing modules do not change the condition that the intermediate band is parallel to the radial direction of the pipe cross section. 45 to 90 degrees relative to each other, and at least one end of the static mixing module is fixed to the pipe through a fixing member. Mixing and wherein the are. 4. A static mixing module according to claim 1, wherein at least one of the static mixing modules is arranged such that the intermediate strip is parallel to the radial direction of the tube cross section, and the blades on both sides of the module and both sides of the blades. At least two or more static mixing modules are provided in which the folding directions of the V-shaped static mixing part materials of the following constitution arranged in And a static mixing module having at least one end fixed to a tube via a fixing member. (Structure of V-shaped static mixing part material) An intermediate strip and a wing portion and a cut portion having a constant width extending so as to extend perpendicularly to both sides of the intermediate strip. The defective portions are alternately arranged, and on the opposite side of the intermediate strip, the wing portion and the defective portion are arranged so as to be inverted from the one side, and the center line in the minor axis direction of the intermediate strip. The V-shaped static mixing part material that is bent at, and has a substantially perfect circle when viewed from the outer side of the band. 5. A pipe in which a plurality of fluids can pass is provided in the pipe.
A mixing device, wherein at least one of the static mixing modules described above is fixed via a fixing member such that the intermediate strip is perpendicular to the radial direction of the tube cross section. 6. A static mixing module according to claim 1, wherein at least one of the static mixing modules is arranged so that the intermediate band is perpendicular to the radial direction of the pipe cross section, and the wings on both sides of the module and both sides of the wings are provided. 5. At least two static mixing modules are provided in which at least two blades of the dogleg-shaped static mixing part material according to claim 4 are arranged so that the bending directions of the blades are opposed to each other and the blades of the dogs are fitted to the opposing defective portions. 1. A mixing device comprising at least one static mixing module, wherein at least one end of the static mixing module is fixed to a pipe via a fixing member. 7. A static mixing module according to claim 1, wherein at least one of the static mixing modules is arranged such that the intermediate band is perpendicular to the radial direction of the pipe cross section, and the wings on both sides of the module and both sides of the wings are provided. 5. At least two static mixing modules are provided in which at least two blades of the dogleg-shaped static mixing part material according to claim 4 are arranged so that the bending directions of the blades are opposed to each other and the blades of the dogs are fitted to the opposing defective portions. Two or more, adjacent static mixing modules are rotated by 45 to 90 degrees with respect to each other without changing the condition that the intermediate strip is perpendicular to the radial direction of the tube cross section, and at least one end of the static mixing module is a fixing member. A mixing device, characterized in that it is fixed to the pipe through the. 8. The mixing apparatus according to claim 2 or 5, which is constituted by a combination of at least two static mixing modules according to claim 1.